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Coquimbite Voltaite Szomolnokite & Halotrichite

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SCH178756

Coquimbite Voltaite Szomolnokite & Halotrichite

Description Tabs

Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 6.6 × 6.8 cm
Description

Gorgeous purple coquimbite crystals with excellent colour and clarity.The list of associates is extensive (also römerite and rhomboclase) and add contrast and interest.

There are a lot to observe in this specimen, the exceptional coquimbite clarity let see the well-developed voltaite crystals that are included while there are some very good voltaite clusters scattered over the whole rock.

This is the best coquimbite I've ever had for crystal perfection and quality.

This is incredible under the lens!

Mineral Data
What's on the rock

Coquimbite

Formula: 
Fe2-xAlx(SO4)3·9H2O, x ~0.5
Strunz: 
7.CB.55
Hardness: 
2.5
Streak: 
white
Type Locality: 
Coquimbo Region, Chile

Voltaite

Formula: 
K2Fe2+5Fe3+3Al(SO4)12·18H2O
Strunz: 
7.CC.25
Hardness: 
3.0 - 3.5
Type Locality: 
Solfatara di Pozzuoli, Pozzuoli, Phlegrean Fields, Naples Province, Phlegrean Volcanic Complex, Campania, Italy

Szomolnokite

Formula: 
FeSO4·H2O
Strunz: 
7.CB.05
Hardness: 
2.5
Type Locality: 
Smolník (Schmöllnitz; Szomolnok), Gelnica Co., Košice Region, Slovakia

Halotrichite

Formula: 
FeAl2(SO4)4·22H2O
Strunz: 
7.CB.85
Hardness: 
1.5 - 2.0
Streak: 
White
schani

Seller Information

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